Base frame of a collapsible baby jogging stroller



FIG. 1 is a perspective view of a base frame for a collapsible baby jogging stroller showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front end view of the invention looking from the front wheel position toward the rear axle. 

The ornamental design for a base frame of a jogging stroller, as shown. 